Worst air pollution Cartagena, today and tomorrow
Today (9 August): Air quality in Cartagena is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 15.2/100).
Tomorrow (10 August 2026): Air quality in Cartagena is good. All pollutants stay as today. Pollution peaks around 11:00 AM (O3: 18.7/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Cartagena's air quality benefits from its exceptional Colombian Caribbean coastal position on Cartagena Bay, with consistent Caribbean northeast trade winds providing reliable maritime ventilation. Vehicle traffic on surrounding roads and the refinery, port, and vehicle density corridor contribute local sources, while the outstanding Caribbean coastal exposure generally maintains Cartagena among Colombia's more moderately ventilated major Caribbean coastal industrial port cities throughout most of the year.
Today - 9 August | Pollution peaks at 10:00
AQI:
Good
15.2/100
PM2.5 (fine particles):
Good
3.2/100
PM10 (coarse particles):
Good
1.6/100
NO2 (nitrogen dioxide):
Good
5.7/100
O3 (ozone):
Good
15.2/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
3.6/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 11:00
AQI:
Good
18.7/100
PM2.5 (fine particles):
Good
3.0/100
PM10 (coarse particles):
Good
1.0/100
NO2 (nitrogen dioxide):
Good
8.6/100
O3 (ozone):
Good
18.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
3.7/100
Frequently Asked Questions
Is air quality bad in Cartagena right now?
On 9 August 2026, overall air quality in Cartagena is good. AQI is the main air quality indicator at 15.2/100. Pollution peaks around 10:00 AM (O3: 15.2/100).
Will air quality be worse tomorrow in Cartagena?
On 10 August 2026, air quality conditions in Cartagena will be similar to today, with AQI forecast at good at 18.7/100. Pollution peaks around 11:00 AM (O3: 18.7/100).
When is air pollution at its worst in Cartagena?
The biggest local contributors to pollution in Cartagena are traffic on the surrounding roads, heavy industrial and chemical processing, along with shipbuilding and port operations, particularly once dry spells bring strong winds. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Cartagena based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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